diff options
| -rw-r--r-- | mdk-stage1/NEWS | 1 | ||||
| -rw-r--r-- | mdk-stage1/dns.c | 37 |
2 files changed, 24 insertions, 14 deletions
diff --git a/mdk-stage1/NEWS b/mdk-stage1/NEWS index 816a92452..0544949cb 100644 --- a/mdk-stage1/NEWS +++ b/mdk-stage1/NEWS @@ -1,5 +1,6 @@ - do not advice long dead pcmcia.img & network.img images (mga#5466) - first attempt at supporting XenBlk discs +- switch from gethostbyname() to getaddrinfo() (mga#4056) 1.65 - load btrfs module to mount btrfs diff --git a/mdk-stage1/dns.c b/mdk-stage1/dns.c index 63d801c62..05f21a14a 100644 --- a/mdk-stage1/dns.c +++ b/mdk-stage1/dns.c @@ -39,29 +39,38 @@ int mygethostbyname(char * name, struct in_addr * addr) { - struct hostent * h; + struct addrinfo hints, *res, *p; + int status; + char ipstr[INET6_ADDRSTRLEN]; + + memset(&hints, 0, sizeof hints); + hints.ai_family = AF_INET; //AF_UNSPEC for both IPv4 & IPv6 + hints.ai_socktype = SOCK_STREAM; /* prevent from timeouts */ if (_res.nscount == 0) return -1; - h = gethostbyname(name); - - if (!h && domain) { - // gethostbyname from dietlibc doesn't support domain handling - char fully_qualified[500]; - sprintf(fully_qualified, "%s.%s", name, domain); - h = gethostbyname(fully_qualified); + if ((status = getaddrinfo(name, NULL, &hints, &res)) != 0) { + log_message("getaddrinfo: %s\n", gai_strerror(status)); + return -1; } - if (h && h->h_addr_list && (h->h_addr_list)[0]) { - memcpy(addr, (h->h_addr_list)[0], sizeof(*addr)); - log_message("is-at: %s", inet_ntoa(*addr)); - return 0; + for (p = res;p != NULL; p = p->ai_next) { + void *tmp_addr; + + struct sockaddr_in *ipv = (struct sockaddr_in *)p->ai_addr; + tmp_addr = &(ipv->sin_addr); + + /* convert the IP to a string: */ + inet_ntop(p->ai_family, addr, ipstr, sizeof ipstr); + + memcpy(addr, tmp_addr, sizeof(*addr)); + log_message("is-at: %s\n", inet_ntoa(*addr)); } - log_message("unknown host %s", name); - return -1; + freeaddrinfo(res); // free the linked list + return 0; } char * mygethostbyaddr(char * ipnum) |